[14p-D519-1~9] 6.5 Surface Physics, Vacuum

[14p-D519-1] Perylene and bromine on Au(111) surface

〇Osamu Endo^1,2, Wang J. Chun², Masashi Nakamura³, Kenta Amemiya⁴, Hiroyuki Ozaki¹ (1.TUAT, 2.ICU, 3.Chiba Univ., 4.KEK IMSS PF)

Keywords:organic semiconductor, STM, C K-NEXAFS

The changes of geometric and electronic structures induced by bromine doping onto the perylene monolayer on a Au(111) surface is studied by scanning tunneling microscopy and X-ray absorption fine structure spectroscopy at the near carbon K-edge. At the initial stage, bromine molecules adsorbed in line on the 4x4 super structure of perylene and induce a partial charge transfer. As the doping amount increases, perylene molecules are cationized and form another two-dimensional super structure with an enlarged lattice constant.